Simple way to draw electric field lines using Plotly.offline; convert from Matplotlib.pyplot

The result is:

This page shows how to draw vector field (electric field lines) using plotly. The figure is converted from matplotlib.pyplot.

Draw continuous electric field lines with sliced potential plane in 3D using Python Plotly

The result (static image) is:

Plotly first time operation check: copy and past of sample code (life time expectancy)

The result in static image is:

And it works!!